CVE-2026-35391

Description

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftmost) entry of the X-Forwarded-For header, which is fully controlled by the client. An attacker could forge their source IP address to bypass IP-based rate limiting (enabling brute-force attacks against the admin login) or forge audit log entries (making malicious activity appear to originate from arbitrary IP addresses). This vulnerability is fixed in 1.4.11.

PUBLISHED Reserved 2026-04-02 | Published 2026-04-06 | Updated 2026-04-07 | Assigner GitHub_M

Problem types

CWE-348: Use of Less Trusted Source

Product status

References

github.com/...ebmail/security/advisories/GHSA-7pj2-232x-6698

cve.org (CVE-2026-35391)

nvd.nist.gov (CVE-2026-35391)

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